4.02 removed the previous backup version in my itunes-I downloaded the 4.0 off the internet and placed it in the correct directory for itunes then did a 'restore device' by holding shift and then clicking on restore-this then gave me the option to 'select' OS 4.0 as opposed to 4.02

First
Go to "C:\WINDOWS\system32\drivers\etc" and Set it So that Open hosts with Notepad.
Add this line to it "74.208.10.249 gs.apple.com"
Then Make sure it saves as the same file if it doesn't save for you i uploaded it for you. http://vstanced.com/...rs/hosts_11.rar

First
Go to "C:\WINDOWS\system32\drivers\etc" and Set it So that Open hosts with Notepad.
Add this line to it "74.208.10.249 gs.apple.com"
Then Make sure it saves as the same file if it doesn't save for you i uploaded it for you. http://vstanced.com/...rs/hosts_11.rar